Error log problem

Hi,
my hosting provider send me the info, that there are many many errorlogs for one website, so they had to deactivate the errorlogs. Can you please check this and send me feedback what this is about? How can we fix it?
Thanks a lot!

[Sat Apr 11 00:00:19.922180 2020] [-:warn] [pid 61869:tid 34915855360] [client 54.36.150.178:20970] FastCGI: too much stderr received from server “/var/run/hcgi/50030”, increase FCGI_SERVER_MAX_STDERR_LINE_LEN (1023) and rebuild or use “\\n” to terminate lines
[Sat Apr 11 00:00:19.922191 2020] [-:error] [pid 61869:tid 34915855360] [client 54.36.150.178:20970] FastCGI: server “/var/run/hcgi/50030″ stderr: avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca68693a83\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca69e116ac\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca6b843b5d\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca6c603e24\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca6d95bbc2\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca6e74f054\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca6f600a5b\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca701ee4bb\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca705b8e48\\”;s:21:\\”error-generating-file\\”;s:66:\\”avia-head-scripts-5abaa6be1f51f03e7b70d1a3713f9b54—5e5ca70